[rtems commit] ftpfs: Fix NULL pointer access

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    82eb2c4d5f89893d35c841387fa8631ed31364ab
Changeset: http://git.rtems.org/rtems/commit/?id=82eb2c4d5f89893d35c841387fa8631ed31364ab

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Thu Nov 22 14:08:38 2012 +0100

ftpfs: Fix NULL pointer access

---

 cpukit/libnetworking/lib/ftpfs.c |   18 +++++++++++-------
 1 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/cpukit/libnetworking/lib/ftpfs.c b/cpukit/libnetworking/lib/ftpfs.c
index 5ba7515..6ce2543 100644
--- a/cpukit/libnetworking/lib/ftpfs.c
+++ b/cpukit/libnetworking/lib/ftpfs.c
@@ -1148,16 +1148,20 @@ static void rtems_ftpfs_eval_path(
 static void rtems_ftpfs_free_node(const rtems_filesystem_location_info_t *loc)
 {
   rtems_ftpfs_entry *e = loc->node_access;
-  const rtems_ftpfs_mount_entry *me = loc->mt_entry->fs_info;
 
-  /* Close control connection if necessary */
-  if (e->ctrl_socket >= 0) {
-    rtems_ftpfs_send_command(e, "QUIT", NULL, me->verbose);
+  /* The root node handler has no entry */
+  if (e != NULL) {
+    const rtems_ftpfs_mount_entry *me = loc->mt_entry->fs_info;
 
-    close(e->ctrl_socket);
-  }
+    /* Close control connection if necessary */
+    if (e->ctrl_socket >= 0) {
+      rtems_ftpfs_send_command(e, "QUIT", NULL, me->verbose);
 
-  free(e);
+      close(e->ctrl_socket);
+    }
+
+    free(e);
+  }
 }
 
 static rtems_filesystem_node_types_t rtems_ftpfs_node_type(